-
公开(公告)号:US5281491A
公开(公告)日:1994-01-25
申请号:US808591
申请日:1991-12-20
CPC分类号: H01M2/1686 , C08J9/26 , C08J9/28 , H01M2/1653 , C08J2201/0543 , C08J2201/0546 , H01M2300/0025
摘要: The present invention is directed to a multi-ply unfilled microporous sheet product composed of at least one first ply and at least one second ply which are, respectively, formed from polymeric compositions having different rheological properties and to a method of forming said sheet product.
摘要翻译: 本发明涉及由至少一个第一层和至少一个第二层组成的多层未填充微孔板产品,其分别由具有不同流变特性的聚合物组合物形成,以及形成所述片材产品的方法。
-
公开(公告)号:US5240655A
公开(公告)日:1993-08-31
申请号:US808592
申请日:1991-12-20
IPC分类号: B02C13/18 , B02C13/06 , B02C13/286 , B02C19/00 , B02C23/00 , B02C23/02 , C08J9/26 , C08J9/28 , H01M2/16
CPC分类号: B02C19/0087 , C08J9/26 , C08J9/28 , H01M2/1653 , H01M2/1686 , C08J2201/0543 , C08J2201/0546 , H01M2300/0025 , Y02W30/60
摘要: A process of having a microporous multiply sheet product which is capable of becoming non-porous at a predetermined elevated transformation temperature is formed by first forming a non-porous, multiply initial sheet product having at least one first ply and at least one second ply, each with its own viscosity profile. The initial sheet product is then stretched and annealed to impart porosity to the sheet product.
摘要翻译: 通过首先形成具有至少一个第一层和至少一个第二层的无孔多倍的初始片状产品,形成能够在预定的升高的相变温度下变得无孔的微孔多层片材的方法, 每个都有自己的粘度分布。 然后将初始片材产品拉伸和退火以赋予片材产品孔隙率。
-